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One-Line Diagrams: Creating Your Model in Revit

Friday, December 11th, 2015

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This article describes how to set up your electrical model in Revit so that Design Master Electrical RT can use it for a one-line diagram.

Create Your Panels in Revit

 

Start by creating your panels in Revit like you normally would. Connect them to each other using the standard Revit commands. The connections between panels in Revit will be used in the one-line diagram.

Update One-Line Settings

The Panel Edit command has settings that will affect how the appearance of the distribution equipment on the one-line diagram.

Main Disconnect Type: The graphics for the main disconnect are based upon the value of this setting. Main Lugs Only will show no main disconnect. Breaker and Fused Switch will both include a corresponding block on the main bus.

Lugs: The graphics on the panel bus will change based upon the value of this setting. Also, the choices for Upstream Connection Type for downstream equipment is based upon this setting. Standard lugs require all downstream equipment to connect to a circuit. Double or Feedthrough allows the downstream equipment to use a Top Lugs or Feedthrough connection. This connection will be displayed graphically on the one-line diagram only. You still need to make the connection using standard Revit workarounds.

Show on One-Line Diagram: You can uncheck this box if the distribution equipment should not be shown on the one-line diagram. Use this for the times when you need to model something in Revit that you do not want to show on your one-line. The equipment will be skipped. Any downstream equipment will be connected directly to the equipment upstream from this one.

Upstream Connection Type: How the feeder is initially drawn from the upstream distribution equipment is controlled by the value of this setting. You can move the feeder manually after it has been inserted. Setting this properly will allow the initial location to be more likely to be correct.

Most of the other settings can be displayed as labels on the one-line diagram on the distribution equipment. They do not otherwise affect the graphics of the one-line diagram.

Create AutoCAD Project

 

Before you can export your project from Revit, you need to create your project in AutoCAD. Create the drawing where the one-line diagram will be drawn. In AutoCAD, run the Start New Electrical RT Project command.

Ribbon: DM Electrical RT->Utilities-> dm_dm-startNewProject Start New Electrical RT Project

Pulldown Menu: DM Electrical RT->Start New Electrical RT Project

The dm_elec.dm file will be created in the folder that will need to be selected when you use the Export One-Line command in Revit.

Export from Revit / Import to AutoCAD

 

Use the Export One-Line command to export the information from your Revit model to your AutoCAD project. Select the dm_elec.dm file in the folder where you previously created your AutoCAD project.

Go to a drawing in your project in AutoCAD and run any Design Master Electrical RT command. The newly exported information will be detected and imported.

When you make changes to your Revit model, run the Export One-Line command in Revit, then the Update command in AutoCAD.

Ribbon: DM Electrical RT->One-Line Diagram-> dm_elecrt-updateBlue Update

Pulldown Menu: DM Electrical RT->Update One-Line Diagram

After you run those two commands, the one-line diagram will be updated to match the Revit model.

Update AutoCAD Graphics Settings

 

Once your distribution equipment is in AutoCAD, use the Edit command to modify the graphics and layers that will be used when the equipment is inserted on the drawing.

Ribbon: DM Electrical RT->Distribution Equipment-> dm_elecrt-old-panel Edit

Pulldown Menu: DM Electrical RT->Distribution Equipment->Edit Distribution Equipment

The Layer System field controls the layer that is used for the distribution equipment.

The Feeder Layer System field controls the layer used for the upstream feeder connected to this equipment. The layer of downstream feeders is controlled by the distribution equipment that they are connected to.

The Initial Block field controls the block that is first used during the Generate commands for the equipment, which are covered in the Automatic Generation and Customization Options article. Changing this value will not change the block once it is inserted on the drawing; instead, you can use the Change Graphics command to change the block used for that piece of equipment.

Ribbon: DM Electrical RT->Change-> dm_elecrt-changeBlock Change Graphics

Pulldown Menu: DM Electrical RT->Change->Change Graphics

The Initial Fed From field is used during the dm_elecrt-old-drawRiser Generate Riser command to control whether the equipment is fed from the top or bottom. The initial feeder will approach the equipment from this direction. Changing this value will not change the feeder route once it is inserted on the drawing; if adjustments need to be made, you must make them manually.

The Upstream OCP Block field controls the graphics used for the OCP shown on the feeder coming to this distribution equipment.

The Circuit OCP Block field controls the graphics used for the OCP for the feeders coming from this distribution equipment.

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